Improvement in shingle-machine



@wird game JOHN B. DOUGH-ERTY, OF ROCHESTER, NEW YORK.

Letters Patent No. 92,591, dated July 13,1869; antedated June 30, 1869.

IMPROVEMENT IN SHING-LE-MACHINE.

The Schedule referred to in these Letters Patent and making part of thesame.

To whom it may con-cern Be it knownthat I, JOHN B. DOUGHERTY, ofRochester, in the county of Monroe, and State of New York, have inventedcertain new and useful Improvements in Shingle-Machines, and I do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the accompanying drawings, making partof this specification, in whichj Figure 1 is a side elevation of anordinary shinglesawing machine, with my invention attached.

' -Fignre 2 is a top View of thesame. f

A Figure 3 is an end elevation of the frame, the hinged table and thesliding bolt-frame, or chuck G, being Vshown infsection through thefriction-rohers R and z', as indicated by the red lines n, Iig. 2. j

Figure 4 is an enlarged sectional View of the parts taken iu the plane0f the red line x, fig. 2.

-Litre letters indicate corresponding parts in the several gures.

This invention relates to that class of shingle-machines iu which thebolt-carriage is operated by hand, presenting the block to a horizontalcircular saw, and

It consists in the construction of the hinged frame, havingcarriage-ways, and carriage, and head-block arranged and operatingthereon. j

To enable others to make and use my invention, I will describe itsconstruction and operation.,

I make the frame A as heretofore used.

To the cap-rails B, I hinge the frame C, as seen at N, in g. l.

I provide this frame with a iiange, F, to reach below the saw, and actas a guard, and also as a conductor of the sawdust. 1 l

The offset D is designed especially as a. guide for the sawdust, as itisthrown fromthe block-or bolt.

lIn these respects this' frame or guard is similar to that shown in myformer application, patented October 9, 1866.

This frame is made whole, and hinged so as to swing vertically from thesaw, when desired.

There are clamping-jaws a cast on each side of the main frame A, and thehead of the clamping-screw b, which is attened, so as to haveashoulderonly on two opposite sides, passes through between the jaws a, when thescrews on each side ofthe machine is turned so as to clutch under thejaws, which hold this frame perfectly solid.

'The ribs r of this frame are raised suliiciently to receive thefriction-rollers R upon the top, andthe rollers 11,gs. 3 and 4, traverse's the -side of the track. or rib T, on the right-hand side of themachine.

The lateral strain or friction, caused bythe draught from the saw, isfully neutralized by the rolleis i.

The jaws J, shown in gs. 3 and 4, secures the car.- riage G to theswinging frame C.

' The counterweight wis intended to hold the frame G up out of the'way,when the saw S is being removed or replaced, and the cord maybe unhookedwhen ,the

frame is -adj usted in its working position.

The bolt-rest and .-dogging-apparatus, common in these machines, are notshown.v

What I claim as my invention, and desire to secure by Letters` Patent,is-- l. The swinging frame-Smith carriage-ways 1*, and having thehead-blocker carriage G sliding thereon,

all constructed to operate in the manner and for the purposesubstantially as set forth.

Witnesses WM. S, LOUGHBOROUGH, J AMES DoRsnY.

